/ 



Staphylinida of Ja-pan. 75 



piiLorljinulate, <a little longer than broad, very shining 

 black, A'cry s})aringly punctured. Elytra very short and 

 narrow, much shorter and narrower than the thorax, dark 

 bluish or greenish, sparingly and coarsely but obsoletely 

 punctured. Hind body dilated from the base toAvards the 

 extremity, shining black, very sparingly punctured. Legs 

 yellow, with the extreme point of the femora black. 

 IVletasternum extremely short, extremity of middle coxjb 

 almost reaching the base of the hind coxje. 



Beaten off trees at Kawatchi in September and Oc- 

 tober, 1871. 



This fine insect has been named by Mr. Lewis in honour 

 of his friend Dr. Power, Avho is so well known for his 

 persevering labours in discovering new and rare species of 

 British Coleoptera. 



138. Pcederus mixtiis, n. sp. {P. tamulo, Er. affinis). 

 Alatus, niger, capite elytrisque chalybeis, thorace abdomi- 

 nisque segmentis 4 primis rufis ; palpis antennisque basi 

 testaceis, mandibulis piceo-testaceis. Long. 3 — 4 lin. 



This species is evidently closely allied to P. tamulus^ 

 Er., a species I know only by description, but Erichson's 

 description is not characteristic of this species in one or 

 two points. P. mixtus is about the size and form of 

 P. loncjipennis^ but is differently coloured, and has the 

 thorax more narroAved behind, &c. &c. Antennre slightly 

 longer than head and thorax, black, the two basal joints 

 yellow, but more or less infuscate. Mandibles pitchy 

 yellow (they appear black Avlien closed, owing to the outer 

 edge being darker in colour than the other parts). Head 

 quite as broad as the thorax, eyes prominent ; it is dark 

 blue, the punctuation rather close and distinct except on 

 the disc. Thorax a little longer than broad, distinctly 

 narrowed behind, finely but distinctly punctured, except 

 along the middle, Avhich is impunctate. Elytra scarcely a 

 fourth part longer than the thorax, dark blue, Avith a 

 distinct Avhite pubescence, moderately, strongly and not 

 closely punctured. Legs entirely black. 



Observed once in some numbers in the marsh at Xaga- 

 saki ; also in China, descending as far south as Hong 

 Kong. 



139. Padcrus Idee, LcAvis (not described). Alatus, 

 niger, mandibulis, thorace, abdominis segmentis 4 primis 



